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2 522 175

(13)

(51)

IPC

H04W72/12(2009-01-01)

(21) (22)

Application

2011127204/07, 2009-12-03

(24)

Start date

2009-12-03

(22)

Actual filing date

2009-12-03

(45)

Published

2014-07-10

(72)

Inventor

Chzhan GodunBala EhrdemPetraski Filip Dzh.Shin Sung-KhiukPan' Kajl Tszjun-Lin'Levi Dzhozef S.Van Tszin'Van Piter S.Stern-Berkovits Dzhanet A.Khajm Dzhon V.

(73)

Holder

Interdidzhital Pehjtent Kholdingz, Ink.

UPLINK POWER HEADROOM REPORTING FOR CARRIER AGGREGATION Russian patent published in 2014 - IPC H04W72/12

Abstract RU 2522175 C2

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to wireless communication. A method for reporting power headroom is disclosed. Power headroom may be reported for all carriers (wideband), for a specific carrier or for a carrier group. The formula used to calculate the power headroom depends on whether the carrier (or a carrier in a carrier group) has a valid uplink grant. If the carrier or carrier group does not have a valid uplink grant, the power headroom may be calculated based on a reference grant. The power headroom is calculated by a wireless transmit/receive unit and is reported to an eNodeB.

EFFECT: estimating and reporting representative information on power headroom (PH) when multiple carriers are allocated for WTRU in a LTE-A system and improved transmission and signalling of information on PH to support efficient PH reporting in LTE-A.

43 cl, 7 dwg

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RU 2 522 175 C2

Authors

Chzhan Godun

Bala Ehrdem

Petraski Filip Dzh.

Shin Sung-Khiuk

Pan' Kajl Tszjun-Lin'

Levi Dzhozef S.

Van Tszin'

Van Piter S.

Stern-Berkovits Dzhanet A.

Khajm Dzhon V.

Dates

2014-07-10—Published

2009-12-03—Filed